Magnetic clutch.



A. PICK. MAGNETIC CLUTCH.

APPLICATION FILED JULY 24,1909. 956, 1 64. Patented Apr. 26, 1910.

mil-

WITNESS S:

To all whom it may concern:

' STATES PATENT onrior..

I, ALFRD PICK, F VIENNA, AUSTRIA-HUNGARY.'

i. MAGNETIC CLUTCH.

' Speeication of Letters Patent.

Patented Apr. 26,1910.

Application tiled July- 24, 1909i Serial No. 509,356.

Be it known 'that I, ALFRED PICK, a subject of the Em ror of 'Austria-Hungary, and a resident o the city of Vienna, in Austria-Hungary, have invented certain new and useful Im rovements in Magnetic Clutches,

'of which tV e following is a specification. 0 .A My invention relates to electromagnetic clutches, and its object is to improve upon devices of this type and to provide a simple and eicient apparatus which has decided advantages over those now known in the art.

vI-othese ends my invention resides in the construction .and arrangements of parts shown in plan view with the upper part of `casing is esignated by l1.

the casing removed, and with some of its parts drawn 1n section. In' Fig. 3 I have shown on -a larger scale, 1n sectional plan AView the driving shaft with some of its associated parts which may be used for speed adjustments.

Like characters of reference designate corresponding parts in all of the igures.

-10 designates the lower portion of a casing which serves to su port the mechanism of a .clutch and to inc ose nearly all of its working arts. The' upper portion of the It is arranged to be secured to the lower portion in some suitable manner, as for example, by means of bolts l2.

20 is a driving shaft running in bearings 21, 22, which are supported by the casing, and is arranged to be driven from some external source of power. To this shaft, is

`keyed a sprocket pinion 23. 24 and 25. a re gears which also rotate with this shaft., but are arranged -to `be moved longitudinally thereon in a ma'nner which willbe fully :described hereinafter.. V j

30 is a driven shaft twhich is arranged to be rotatedv in either :direction and `at different speeds from the shaft 20, or to reinain "at restwhile thglatteris'rotatin tlg-and 32 are bearingsfo'r'the driven sha t also supday of .the parts of my ported by the casing. Upon this shaft in the central part of thefcasing is a two-part or twin armature33. This is splined to the shaft and rotates with it, but is free to have a limited amount of movement in either direction along the shaft. The two parts of this armature are substantially alike and comprise acommon hub 34 from which extend disks 35, outside of which are friction rings 36. These rings are preferably made of steel, hardened on their outer or driving surfaces only, s o that they will wear well but will not materially increase the residual magnetism of the magneti?) circuit.' -They will also hold their shape and thereforeV maintain the required form .of magnetic circuit and thus prevent the deformation of the clutch surfaces having a detriment-al effeet upon the magnetic action. 1'

Anuular grooves 37 are Aprovided on the inner surfaces of the disks near the hub,L and oil holes 38 are drilled through the armature` disks fromthese grooves to the inside of the friction rings. A11 oil-stop 13 depends from the upper portion of the casino. into the space between the two armature disks.

4.0 designates a magnet member. loosely 41, the ter-lv with a air' Vmounted upon the shaft 30 on one side of the Within this magnet. member "1s magnet member and run ina'chamber formed in the casing. closes the collector rings and protects themfrom oil and dust. 44 and 45 ariel brushes also supported by the casing and bearing upon these rings.4 `By this arrangement an electric current may be sent through this coil at will to magnetize the magnet member and armature. l The magnetic circuit of this magnet member and armature is self-demag.-

netiziug so that as so`on ascurront is cut oif from the coil the magnetism wlll disappear.

I have disclosed the manner of accomplishingl this result in United. States Patent No; 854,107 which was issued to meon the 21st May, 1907, and Lprefer to construct resent clutch which con-1 stitute its magnetlccircuit ,according tofthe principles set! forth iin .said formen patent.l

On the onterperipheryfof the magnet member 40'ar`efaitixeditw geags 46 and i7. which This chamber in.

are arranged to mesh with the gears 24 and 25, res ectively. The inner portion of the gear 4 is cut away as shown at 48 and partly covers' the friction rings 36. 50 is a similar magnet member also rotatably 'mounted upon the shaft 30. It is provided with a winding and its connections like those -above described. On the outer periphery of 27 is a slot in the shaft 2O through which. .the screw projects.

This prevents the gear from Vturning on the shaft but rovides for a certain amount of longitudina movement.

.6l is a knob or handle aixed to the end of the sleeve by means of which the gear 24' may be moved longitudinally. tThrough the sleeve 60 is a rod 62 to which the gear 25 is affixed by-means of a screw 28 which passes through a slot 29 in the shaft..

A kno or handle 63 is athxed to this rod and provides means for moving the gear 25. This rod is 'cut out as shown to hold a pivoted locking member 64P the end of which passes through a hole in the sleeve 60 and into a recess 65 in the shaft. 66 is a button l projecting through the knob 63 and through the rod 62 by means of which the locking member may be moved against the action of a compression spring 67 to release the lock. When the parts are in the positions in .which they are shown in Figs. 2 and 3, the

gear 24 is in mesh with-gear 46 on magnet member 40 so that the magnet member will be driven by the rotation of shaft 20. When it is desired to have this magnet member driven at a higher rate of speed this may be done by depressing the button 66 and pulling the handle 6l and gear 24 forward. Both gears will then be out of mesh and the locking member will enter an opening.68 in the sleeve to hold them'both out of engagement. T he button may be again depressed and the gear 25 brought forward into engagement with gear 47 by a forward pull upon the handle 63 which will cause the rod 62 to move with it. Now the locking member. will pass through the opening 68 into pocket 69 to hold the gears in their new positions. This operation obviously may be means of the chain 52 so that it will always -rotate with the shaft 20, but in the opposite directionvto the rotation of the magnet meinber 40. But :is the magnet members are vwill remain at rest. Now

able at siich timcsas it is needed.

loosely mounted upon shaft "30` the latter 65 -if a current .of electricity is passed through winding 41, the armature 33 will be attracted to the magnet I.

vmember 40 and will be rotatedl with it.V As

it is splined to the shaft 30 the latter will be v70 driven thereby in a direction opposite to the tate with it in the same direction as the ro'- t'ation of shaft 20. 1

In order to provide the clutch with suitable lubrication and keep its running p'arts 85 cool I provide an oil-bath in the lower pore tion of the casing and also use' certain other elements which l will proceed] to pointent.

53 is a trough partially surroundmg the j gear 51.' The rotation of thisv gear will 90 cause a part of, tlieoil to be carried up into this trough and forced through a pipe54 outside of the casing, and into the casing again at 55. The pipe is made of sufficient length to cool the oil before it renters the casuig. The up er outlet of the oil is between the two disks of the armature so that it will-run down intothe annular grooves 37 and out through radial holes 38 to the friction rings 86. The oil-sto 13 keeps the 100 oil from flying over the top o the armature; The shape of the twin armature facilitates this part ofthe operation and also offers a considerable cooling surface. The underside 48 of gear 47 also tends to direct such 105 oil as isthrown olf centrifugally in a de sired direction. Provision may be made for leading a part of the oil from the casing to the shaftl bearings in order to lubi'icate them. In connection with.- this oiling sys` 110 teni attention is called to the fact that the amount of oil circulated will be proportional great amount of lubrication will be avail- The arrangement of' parts hereinabove described makcs a' compact device and saves considerable space. I have shown the speedchanging device with tw'o sets of ears, but obviously, a greater number could e used if a. greater number of steps of speed `is desired., Many of the features herein' described are applicable as well to single clutches as to thoseof the double type shown in the drawings. y 12-5 lVliat I claim is 1. A magnetic clutch comprising a magnet member, means for energizing said member,

.60 A late oilvwithin the casing and to force oil through an armature,` and a friction ring hardened upon its friction surface interposed between said member and the armature.

A magnetic clutch\ comprising a shaft,-

amagnet' member rotataibly mounted thereon, means for energizin' saidjmember, an armature splined to the s iaft, and a friction ring constructed toform an internal air spa-ce, said ring being hardened upon its friction surfaces andinterposed between the magnet memberand the armature.

3.'l A magnetic clutch comprising a magnet member,'ineans for energizing said member, an armature, a friction ring hardened upon its frictionsurfac'es interposed between said member and the armature, and means for conducting cil through the armature to said friction ring.

4;. Amagnetic clutch comprising a casing adapted to contain an oil-batlna shaft, bearings therefor supported by the casing, a magnet member loosely mounted upon the shaft, a winding therefor, and collector rings mechanically connected with the magnet member and electrically connected with its winding; said casing being constructed to -forni an inclosing chamber between one of the bearings andthe oil-bath for said collectorrings.

5. A- magnetic clutch comprising a casing I adaptedto contain an oil-bath, a shaft supported Aby the casing, a magnet member mountedupon the shaft, means formagnet izing said member, an armature splined to the shaft, Land a geardiiectly mounted upon the outer periphery of the magnet member, said gear being arranged` to circulate oil wit-hinthe casing.

6. A magnetic clut-ch comprisinga casing adaptedto contain an oil-bath, cooling means for the oil, a shaft `'supported by the casing,

va magnet member loosely mounted upon the shaft, means for niagnetzing said member, an armature splined to the shaft, and a gear directlymountedl upon the outer periphery of the magnet member, said gear being ar-` ranged to force oil through said cooling means. l Y

` 7. A-magnet-ic clutch comprising 'an inclosing casing adapted to contain an oilbath, a cooling pipeoutside of'the casing and connected with the lower and up er por` tions thereof. an oil-stop depending rom the upper portion of the casing. a shaft supported' by the casing, a maenet member loosely mounted upon the shaft, means for.

ma netizing saidI member, an armature splmedto the shaft, 'and a gear directly mounted upon the outer' periphery'of the magnet, said. gear being arranged to circu- `saidfeooling pipe.

magnetic clutch comprising an inlosingcasing, 'a shaft supported by the casing, a magnet member loosely mounted upon the shaft, a coil within said magnct'membei', an armature s lined to the Shaft, and' collector rings insu ated from but sup cited by said magnet member and connecte with the magnet member winding, said casing be- 7,0

member and connected with `the magnet member Winding; said casing being constructedA to form an 4inclosing chamber between one of the bearings and the oil-bath for said collector-.rings 10, A magnetic clutch comprising a shaft, 85

a magnet member rotatably mounted, thereon, means for energizing said member, van armature splined to the shaft, gears con# nected with the magnet member, a second shaft, gears mounted upon the second shaft,

and means for independently moving the gears on the second shaft into or out of mesh' with the gears on the magnet member shaft.

11. A magnetic clutch comprising a shaft,

a magnet member rotatably mounted thereon, means for energizingr said member, an

armature splined to the shaft, gears connected with the magnet member, a second shaft, gears mounted u on the second shaft, means for independent y movin on the second shaft into or out o mesh with the gears on the magnet member shaft, and means for locking said movable gears in different operative positions.

. `12. A magnetic clutch 'comprising a shaft, 105

a magnet member rotatably mountedthereon, means for energizing said member, an arma-ture splined to the shaft, gears connected with the magnet member, a second' shaft, gears mounted u on the second shaft,

means for independent moving the gears on the second shaft inte or out of mesh with the gears on the magnet. member shaft, means for locking said movable gears in different operative positions, and .a casing -arranged to support said shafts and to m-Y close the clutch.

13. A magnetic clutch comprising a pair of magnet niembeisineans for rotating said members in'opposite directions, means for 120 energizing either of the magnet members, anl armature between said magnet members, and friction rings hardened upon their friction surfaces interposed between said armature and the ma et members.v

14. A magnetic clutchbomprising a shaft,

a-dpair of magnet members rotatably mounte .upon the shaft,""'ineans'foi'. energizing i arings therefor, su ported by 7.5

the gears 10i) tions, sai A mounted memb upon the outer periphery of the ers.

15. A magnetic clutch comprising a cas ingadapted to contain an oil-bath, rotatable members within said casing, a stationary oil-pipe from the lower to the upper portion of the casing, and means for causing the rotation of said members to .circulate oil through said pipe.

16. A magnetic clutch comprising a shaft,

apair of magnet members rotatably mountl energizing either of4 ed thereon, means for said magnet members, .a double armature splined to said shaft between 'the ma et members', friction'rings constructed to orm internalair spaces, said rings being hardened on their friction surfaces and interposed between the magnet members and the armature,'and means for leading oil from the armature to the friction rin s.

17. A magnetic clutch comprism a shaft, a pair of ma et members mounte thereon and arrange to be rotated in opposite di-` rections, means lforener .ing either of said magnet members, a doub e armature splined to said shaft between the magnet members, friction rin .of hardened steel' on their Yfriction'lsur aces and interposed between said magnetfmembers and amature, a second shaft, 1a sprocket-pinion thereon, a chain connecting said pinion with one o f the magnet meinbers, and a gear upon said second shaft connected with the other magnet member. 1

18.`-Amagnetic clutch comprisinff a shaft, a pair of magnet members mounted thereon and .arranged to be rotated in opposite directions, means'for ener zing eit er of said magnet members, a doub e armature splined to said shaft between the magnet members,

` friction rings of steel constructed toform internal' air spacesrsaid rin being har` dened on their friction sur aces and attached to the magnet members and the armature, gears idirectly mounted .upon the outer peripheriesof the magnet members, a

chain connecting said pinion with the gear on one of the magnet' members, and ai gear upon said second shaft in mesh with the gear on the other magnet member.

1S). A magnetic clutch comprising a shaft, a pair of magnet members rotatably` mounted thereon, means for ener ing either of said magnet members, a Duble-armature splined to said shaft between the magnetj members, .gears directly mounted upon the outer peripheries of thema et members, a second shaft, a sprocket-pinion thereon, and

, means comprising 'gears directly inion thereon, a.'

.gears in different operative positions.

net member,

a chain connecting said pinion with the gear;

on one ofthe magnet members; a plur of gears upon said second shaft, means independently moving said ears into or. out of mesh with the gears on t e other magnet member, and means for locking'said'movable 20. A magnetic c utch comprisin a. casing adapted to contain an oil bath, a s aft supported by the casing, bers rotatably mounted upon said shaft, means for energizing either of said magnet a double armature splined to the shaft between the magnet members, gears directlymounted upon.the outer peripberies of the magnet members, a second shaft also supported by the casing, a sprocket-pinion a pair of magnet mein-V for thereon, and a chain connecting said pinion lwith the gear on one of bers; a trough about said chain, a pipe connected with the troughand to the upper portion of the casing, and another gear upon said second shaft in mesh with the gear on the other magnet member.

2l. A magnetic clutch comprisin a casing adapted to contain an oil-bath, a s aft supported by the casing, bers rotatably mounted upon said. shaft, means for energizing either of said ma et members, a two-part armaturespline 4to ,said shaft between the magnet members, friction rings attached to the magnet members the magnet menr.

a pair of magnet mernand the armatures, gears directly mounted V upon the outer peripheries of the ma et members, a 'second shaft also supporte by the casing, a sprocket-pinion thereon, and a chain connecting said pinion with thegear on one of the magnet Amembers; a plurality of gears upon said independently moving said gears into or out 'of mesh with the gears on the other magnetmember,and means for locking said movan oi -cooling device, a trough n.bo1t;said chain, said chain and trough being arranged to force oil through the cooling evice into' the upper portion of the casing, and an oilstop between the two parts of the armature depending from the inside of the casing.

22. A magnetic clutch comprising a shaft, a magnet member rotatably mounted thereon, means for energizing said member, an armature splined to the shaft, andl friction rings of steel hardened upon their friction Vi'oo second shaft, means for able Wearsin different operative positions;

surfaces and attached to said magnet mem` ber and-armature at the outer edges thereof.

23. A magnetic clutch comprising a ma means for energizing said member, an armature, friction rings. hardened upon their friction surfaces attached to said member and the armature at the outer edge'thereof, and means for conduct# ing oil through thc/armature to' said friction ring.

24. A magnetic clutch comprising a shaft,

a pair of magnet members rotatably mount- (ed thereon, means for energizingeither of said magnet members, a double armature 5 splined to said shaft between the magnet members, friction rings of steel constructed vto form internal air spaces, said rings being t hardened on their friction surfaces and attached to the magnet members and the arma- 10 ture7 and means for leading oil from the armature to the friction rings through said air spaces. t

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

i ALFRED PICK.

Witnesses:

ROBERT W. HEINGARTNER, AUGUST FUGGER. 

